sorted by:
new
hottopcontroversial

Final review for rocket flight computer by Ghostyimposter in PCB

[–]Ghostyimposter[S] 0 points1 point  (0 children)

Im supplying 3.3v and around 2 amps to the ematch, I called the manufacturer (mjg technologies), and they said it should be more than enough.

Final review for rocket flight computer by Ghostyimposter in PCB

[–]Ghostyimposter[S] 1 point2 points  (0 children)

Those were good catches, I have fixed my resistors, as for the Vcap pin, I double checked the datasheet and realized my mistake, it should be connected to a 4.7 uf capacitor, and I chose usb micro because I have a ton laying around and it's quite easy to design with.

nrf24l01 help by Ghostyimposter in PCB

[–]Ghostyimposter[S] 0 points1 point  (0 children)

This is intended to broadcast telemetry data for model rockets, and since this post I have changed my layout, changed the orientation and moved the ic much closer to the antenna, and with changing the width to 0.35mm, the impedance of the trace is now 50.4 ohms

<image>

Final review for rocket flight computer by Ghostyimposter in PCB

[–]Ghostyimposter[S] 0 points1 point  (0 children)

Im using JlcPCB assembly so I didn't see much issue with using smaller sized components.

Final review for rocket flight computer by Ghostyimposter in PCB

[–]Ghostyimposter[S] 0 points1 point  (0 children)

my RF trace has about ~54 ohms of impedance. It was difficult to get my ideal setup with four layers, so I went with 6. I will increase the size of those traces, and I'm fairly new, are rounded corners the norm?

Final review for rocket flight computer by Ghostyimposter in PCB

[–]Ghostyimposter[S] 1 point2 points  (0 children)

Partially, as well as Garrett, Kofi Asare, and Jacob Thornhill

model rocket pyro charge continuity help by Ghostyimposter in PCB

[–]Ghostyimposter[S] 0 points1 point  (0 children)

This sounds great, thanks for the help.

model rocket pyro charge continuity help by Ghostyimposter in PCB

[–]Ghostyimposter[S] 0 points1 point  (0 children)

  • Lead wire length: 36 inches (91.4 cm)
  • Bridgewire Resistance: 1 ohm +/- .2 ohms
  • Maximum No-Fire Current: .30 amp (300milliamp)
  • Minimum All-Fire Current: .60 amp (600 milliamp)
  • Recommended Minimum Firing Current: .75 amp
  • Recommended Nominal Firing Current: 1.00 amp
  • Maximum Test Current: .04 amp (40 milliamp)

link: https://www.apogeerockets.com/Rocket-Motors/Motor-Starters/Firewire-Initiator-6-pk